\section{Referências}

\begin{thebibliography}{99}

  \bibitem{servlets} Java Servlet Technology.
  $http://java.sun.com/products/servlet/$

  \bibitem{JSP} JavaServer Pages Technology.
  $http://java.sun.com/products/jsp/$

  \bibitem{JPA}  JSR  $220$: $JPA$ JPA, Enterprise JavaBeans.
  $http://jcp.org/aboutJava/communityprocess/final/jsr220/index.html$

  \bibitem{JSF} JavaServer Faces Technology.
  $http://java.sun.com/javaee/javaserverfaces/$
  
\end{thebibliography}
